c++写一个循环来查找指定进程 不知道该怎么写？求代码

BOOL FindProcessByName(LPCTSTR szFileName, PROCESSENTRY32& pe)
{

// 采用进程快照枚举进程的方法查找指定名称进程
HANDLE hProcesses;
PROCESSENTRY32 lpe =
{
    sizeof(PROCESSENTRY32)
};
CString strFileName(szFileName);
strFileName.MakeLower();

// 创建进程快照
hProcesses = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (hProcesses == INVALID_HANDLE_VALUE)
    return FALSE;
// 获取第一个进程实例
BOOL isExist = ::Process32First(hProcesses, &lpe);
BOOL isRunning = FALSE;
CString strName;
while (isExist)
{
    strName = lpe.szExeFile;
    strName.MakeLower();
    if (-1 != strFileName.Find(strName))
    {
        isRunning = TRUE;
        break;
    }
    // 遍历下一个进程实例
    isExist = ::Process32Next(hProcesses, &lpe);
}

if (isRunning)
{
    memcpy(&pe, &lpe, sizeof(PROCESSENTRY32));
}

CloseHandle(hProcesses);

return isRunning;

}